package com.ruoyi.framework.config;

import com.ruoyi.framework.security.filter.JwtAuthenticationTokenFilter;
import com.ruoyi.framework.security.handle.AuthenticationEntryPointImpl;
import com.ruoyi.framework.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

/**
 * spring security配置
 *
 * @author ruoyi
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {
  /** 自定义用户认证逻辑 */
  @Autowired private UserDetailsService userDetailsService;

  /** 认证失败处理类 */
  @Autowired private AuthenticationEntryPointImpl unauthorizedHandler;

  /** 退出处理类 */
  @Autowired private LogoutSuccessHandlerImpl logoutSuccessHandler;

  /** token认证过滤器 */
  @Autowired private JwtAuthenticationTokenFilter authenticationTokenFilter;

  /** 跨域过滤器 */
  @Autowired private CorsFilter corsFilter;

  /**
   * 解决 无法直接注入 AuthenticationManager
   *
   * @return
   * @throws Exception
   */
  @Bean
  @Override
  public AuthenticationManager authenticationManagerBean() throws Exception {
    return super.authenticationManagerBean();
  }

  /**
   * anyRequest | 匹配所有请求路径 access | SpringEl表达式结果为true时可以访问 anonymous | 匿名可以访问 denyAll | 用户不能访问
   * fullyAuthenticated | 用户完全认证可以访问（非remember-me下自动登录） hasAnyAuthority | 如果有参数，参数表示权限，则其中任何一个权限可以访问
   * hasAnyRole | 如果有参数，参数表示角色，则其中任何一个角色可以访问 hasAuthority | 如果有参数，参数表示权限，则其权限可以访问 hasIpAddress |
   * 如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问 hasRole | 如果有参数，参数表示角色，则其角色可以访问 permitAll | 用户可以任意访问
   * rememberMe | 允许通过remember-me登录的用户访问 authenticated | 用户登录后可访问
   */
  @Override
  protected void configure(HttpSecurity httpSecurity) throws Exception {
    httpSecurity
        // CSRF禁用，因为不使用session
        .csrf()
        .disable()
        // 认证失败处理类
        .exceptionHandling()
        .authenticationEntryPoint(unauthorizedHandler)
        .and()
        // 基于token，所以不需要session
        .sessionManagement()
        .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
        .and()
        // 过滤请求
        .authorizeRequests()
        // 对于登录login 注册register 验证码captchaImage 允许匿名访问
        .antMatchers("/login", "/register", "/captchaImage")
        .anonymous()
        .antMatchers(
            HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/profile/**")
        .permitAll()
        .antMatchers("/swagger-ui.html")
        .anonymous()
        .antMatchers("/swagger-resources/**")
        .anonymous()
        .antMatchers("/webjars/**")
        .anonymous()
        .antMatchers("/*/api-docs")
        .anonymous()
        .antMatchers("/druid/**")
        .anonymous()
        // 除上面外的所有请求全部需要鉴权认证
        .anyRequest()
        .authenticated()
        .and()
        .headers()
        .frameOptions()
        .disable();
    httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
    // 添加JWT filter
    httpSecurity.addFilterBefore(
        authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
    // 添加CORS filter
    httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
    httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
  }

  /** 强散列哈希加密实现 */
  @Bean
  public BCryptPasswordEncoder bCryptPasswordEncoder() {
    return new BCryptPasswordEncoder();
  }

  /** 身份认证接口 */
  @Override
  protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
  }
}
